import net from 'net';

// 检查端口占用
export function isPortInUse (port: number) {
  return new Promise((resolve) => {
    const server = net.createServer();

    server.once('error', (err: any) => resolve(true));

    server.once('listening', () => {
      server.close();
      resolve(false);
    });

    server.listen(port);
  });
}